Cleveland
Cleveland C27708 Spiral Point Tap 1/2-13 UNC 3 Flute
A cobalt spiral-point tap cuts 1/2-13 UNC threads with three flutes and a 15/16 in thread length
- Cuts clean threads in through-holes with spiral-point design
- Cobalt construction with black oxide resists wear in tough materials
- Three flutes evacuate chips efficiently for smoother tapping
- H3 limit and 2B fit deliver precise 1/2-13 UNC threads
- 75 % thread drill size .4219 in simplifies hole preparation
Cleveland Spiral Point Tap
The Cleveland C27708 is a spiral point tap designed for creating unified coarse threads in metal. It suits machinists and maintenance teams who need reliable internal threading for 1/2-13 UNC fasteners.
General-purpose threading in steel
This tap works well for through-hole jobs in carbon and alloy steels where chip evacuation ahead of the cut is preferred. It is not suited for blind holes, left-hand threads, or materials that require a bottoming or forming tap.
1/2-13 UNC with H3 limits
The 3-flute cobalt body with black oxide coating handles 1/2-13 UNC threads to a 2B class of fit using a .4219 drill size. Thread length is 15/16 in within an overall length of 3 3/8 in, so deeper holes will need a longer tool.
Highlights
- Cuts clean threads in through-holes with spiral-point design
- Cobalt construction with black oxide resists wear in tough materials
- Three flutes evacuate chips efficiently for smoother tapping
- H3 limit and 2B fit deliver precise 1/2-13 UNC threads
- 75 % thread drill size .4219 in simplifies hole preparation
Specifications
| Brand | CLEVELAND |
|---|
Questions about this item
What drill bit size do I need to prepare a hole for the 1/2-13 UNC tap?
Use a 0.4219 in drill bit to achieve the 75 percent thread depth required before tapping.
Will this H3 limit tap fit a standard 2B internal thread gauge?
Yes, the H3 thread limit is designed to produce a Class 2B fit when used correctly.
How can I confirm the tap is cutting properly after starting the hole?
The spiral point should push chips forward out of the hole, and the 15/16 in thread length will be fully formed when the tap reaches depth.
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